#authorizer_credentials ⇒ String

Specifies the required credentials as an IAM role for API Gateway to
invoke the authorizer. To specify an IAM role for API Gateway to
assume, use the role's Amazon Resource Name (ARN). To use
resource-based permissions on the Lambda function, specify null.

#authorizer_result_ttl_in_seconds ⇒ Integer

The TTL in seconds of cached authorizer results. If it equals 0,
authorization caching is disabled. If it is greater than 0, API
Gateway will cache authorizer responses. If this field is not set,
the default value is 300. The maximum value is 3600, or 1 hour.

#authorizer_uri ⇒ String

Specifies the authorizer's Uniform Resource Identifier (URI). For
TOKEN or REQUEST authorizers, this must be a well-formed Lambda
function URI, for example,
arn:aws:apigateway:us-west-2:lambda:path/2015-03-31/functions/arn:aws:lambda:us-west-2:\{account_id\}:function:\{lambda_function_name\}/invocations.
In general, the URI has this form
arn:aws:apigateway:\{region\}:lambda:path/\{service_api\}, where
\{region\} is the same as the region hosting the Lambda function,
path indicates that the remaining substring in the URI should be
treated as the path to the resource, including the initial /. For
Lambda functions, this is usually of the form
/2015-03-31/functions/[FunctionARN]/invocations.

#identity_source ⇒ String

The identity source for which authorization is requested. * For a
TOKEN authorizer, this is required and specifies the
request header mapping expression for the custom header holding
the authorization token submitted by the client. For example, if
the token header name is Auth, the header mapping expression is
method.request.header.Auth.
* For the REQUEST authorizer, this is required when authorization
caching is enabled. The value is a comma-separated string of one
or more mapping expressions of the specified request parameters.
For example, if an Auth header, a Name query string parameter
are defined as identity sources, this value is
method.request.header.Auth, method.request.querystring.Name.
These parameters will be used to derive the authorization caching
key and to perform runtime validation of the REQUEST authorizer
by verifying all of the identity-related request parameters are
present, not null and non-empty. Only when this is true does the
authorizer invoke the authorizer Lambda function, otherwise, it
returns a 401 Unauthorized response without calling the Lambda
function. The valid value is a string of comma-separated mapping
expressions of the specified request parameters. When the
authorization caching is not enabled, this property is optional.
* For a COGNITO_USER_POOLS authorizer, this property is not used.

#identity_validation_expression ⇒ String

A validation expression for the incoming identity token. For TOKEN
authorizers, this value is a regular expression. API Gateway will
match the incoming token from the client against the specified
regular expression. It will invoke the authorizer's Lambda function
there is a match. Otherwise, it will return a 401 Unauthorized
response without calling the Lambda function. The validation
expression does not apply to the REQUEST authorizer.

#provider_arns ⇒ Array<String>

A list of the Amazon Cognito user pool ARNs for the
COGNITO_USER_POOLS authorizer. Each element is of this format:
arn:aws:cognito-idp:\{region\}:\{account_id\}:userpool/\{user_pool_id\}.
For a TOKEN or REQUEST authorizer, this is not defined.

#type ⇒ String

[Required] The authorizer type. Valid values are TOKEN for a
Lambda function using a single authorization token submitted in a
custom header, REQUEST for a Lambda function using incoming
request parameters, and COGNITO_USER_POOLS for using an Amazon
Cognito user pool.